CUDA error: Launch failed in cuCtxSynchronize(), line 1372
I struggled with this problem for months. Used different computers, re-installed Blender, re-installed windows (I am using 8.1 &amp; 10), installed new and old drivers for my Nvidia card, changed the TDR and everything I could think of...but no luck.

Then it occurred to me that the Gforce Experience runs in the background (and being in my opinion, not a well written program) may be overlapping the memory of Blender or at least hogging the memory. So I un-installed it and magic!!! All Cuda errors and memory errors went away. Blender works again as it should!!!

I hope this works for you, as it did for me. Unfortunately, I did not discover this for months, until I had pulled every single strand of hair out of my head.